View of a bay inLake Toba, on the island ofSumatra,Indonesia, which is the largest volcanic lake in the world
Avolcanogenic lake is a lake formed as a result of volcanic activity.[1] They are generally a body of water inside an inactivevolcanic crater (crater lakes) but can also be large volumes of moltenlava within an active volcanic crater (lava lakes) and waterbodies constrained by lava flows,pyroclastic flows orlahars in valley systems.[2] The termvolcanic lake is also used to describe volcanogenic lakes, although it is more commonly assigned to those inside volcanic craters.[3][4][1][2]
These are some examples of rare lava lakes where molten lava in a volcano maintains relative equilibrium, neither rising to overflowing nor sinking to drain away.
